From the Summary: "The Constitution vests Congress with the power of the purse, with several provisions referring to congressional authority to levy taxes, authorize the issuance of debt, and make appropriations to fund the federal government. The Constitution does not provide an explicit role for the President in the budget process. The executive budget process, as currently constituted, exists primarily due to statutes enacted by Congress. [...] The federal budget sustains government functions and plays an important role in shaping policy decisions. Congress regularly reviews the appropriate balance of budgetary responsibilities between the legislative and executive branches, the transparency of budget execution decisions made by the President and OMB [Office of Management and Budget], and whether the existing budget timeline continues to meet the needs of the federal government. In light of these considerations, Congress may evaluate legislative or oversight options that amend aspects of the executive budget process."
CRS Report for Congress, R47019
Congressional Research Service: https://crsreports.congress.gov/